Crusher.



CHARLES S.

LINCOLN, OF MILWAUKEE, WISCONSIN, ASSIGNOR, BY MESNE ASSIGN- MEN'IS, TO ALLIS-CHALMEBS MANUFACTURING COMPANY, A CORPORATION OF DELAWARE.

CRUSHER.

Application filed May 31, 1912.

To all whom it may concern Be it known that T, CHARLES S. LIN OOLN,

and similar substances.

The object of the invention is to provide a crusher in which material is crushed by the direct approach of one of a pair of crushing members toward the other, the material being fed through the crushing chamber by so rotating the crusher members that centrifugal force will automatically advance the material from. the feed to the discharge end-of the crusher.

A clear conception of one embodiment of the invention can be had by referring to the drawing accompanying and forming part of this specification in which like reference characters designate the same or similar parts in the various views.

Figure l is a transverse, central, vertical section through a crusher in which the crushing members are separated to their extreme positions. Fig. 2 is a side elevation of the crusher showing the crushing members, in dotted lines, in their extreme approached position.

The crusher consists essentially of a pair of opposed crushing disks or members 8, 4:0, the crushing surfaces of which are provided with disk shaped liners 2, 1, respectively. The crushing chamber formed between the I liners 1, 2, has the feed inlet hopper 3 directed into its mid-portion and is provided with a free annular discharge opening adjacent the peripheries of the liners 1, 2. A. housing 181 which is fixed to the crusher frame 11 incloses the c'rushingmembers.

The hollow outer shaft 5 is supported in the bearing 9 of the frame 11, and has an outwardly projecting flange 7 formed integral with its end. The crushing member 8 is fixed to the flange 7 by means of bolts 161 which pass through the peripheries of the member 8 and flange 7 and clamp these elements against the opposite ends of dis tance pieces or sleeves 6. The inner shaft a is preferably supported directly by the central inner bore of the hollow shaft 5, and has the crushing member 40 formed in- Specifioation of Letters Patent.

Patented Feb. 9, 1915.

Serial No. 700,858.

tegral with its end. The outer shaft 5 is provided with an outwardly projecting flange 52 to which the plate 15 is bolted, and an inwardly projecting flange 51 which surrounds the end of the shaft 4C. The spring 12 is normally held in compression between the flange 51 and a collar 18 secured to the end of the shaft 1. The spring 12 tends to keep the shaft 1 and crushing member 40 to the extreme right as shown in Fig. 1. v

The driving shaft 13 is supported in a bearing 14: on the frame 11, being mounted eccentrically relative to the shafts 41, 5. The driving pulley 17 is secured to one end of the shaft 13, the opposite end of the shaft being provided with a circular flange 16 which coacts through a liner 61 with the plate 15. The pin 10 coacts with one of its ends, in a central recess formed in the end of the inner shaft 1-. The opposite end of the pin 10 coacts in an eccentric recess formed in the end of the driving shaft 13. The eccentricity of the recess in the end of the shaft 13, in which the pin 10 coacts, is such that as the shaft 13 is rotated from its position as shown in Fig. 1, the axis of the pin 10 will aproach a position of alinement with the axis of the shaft 4. The spring 12 keeps the ends of the pin 10 in coacti on with the shaft ends.

During the operation of the crusher, the material to be crushed is fed to the crushing chamber through the inlet hopper 3. The driving shaft 13 is given a rotary motion by means of the pulley 17 causing that end of the pin 10 which coacts in the recess at the end of the shaft 13 to traverse a circular path and to change its angular position. As the pin 10 changes its position from that shown in Fig. 1 to that shown in Fig. 2, the inner shaft 4:with its crushing member 40 is forced forward and a direct acting mechanical means is provided for crushing. This forward movement or direct approach of the members 40 toward the crushing member 8 causes crushing of the material in the crushing chamber. As the pin 10 changes its position from that shown in Fig. 2 to that shown in Fig. 1, the spring 12 forces the shaft 1 and crushing member 1-0 away from the member 8.

The reaction thrust induced by crushing the material, as well as the spring pressure, are transmitted from crushing member 40 opposed surfaces of the liners 1 through the shaft 4, pin 10, shaft 13, and flange 16 to the plate 15. This plate 15 is rigidly connected to the crushing member 8 so that the reactive thrust induced by crushing is taken up directly between the crusher elements.

The friction between the flange 16, the liner 61 and the plate 15, causes the crushing elements to rotate at substantially the speed of the driving shaft 13. The rotation of the crushing elements causes the material within the crushing chamber to move toward the peripheries of the crushing members 8, 40,. due to the action of centrifugal force onthe particles. As the material advances from the feed to the, discharge-end of the crushing chamber, the larger pieces are successively advanced toward the discharge and crushed between the while the smaller particles are freely discharged from the crusher. The continuous rotation of the shaft 13 causes the crushing member 40 to approach and recede from the member 8, once in each revolution, thereby giving'a crushing impulse during each revolution. The capacity of the machine can be varied by varying the speed of rotation.

It should be understood that it is not desired to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art. v

It is claimed and desired to secure by Letters Patent,

1. A crusher comprising a pair of crushing members rotatable in the same direction about an axis to feed material along thev crushing surfaces thereof, a pin coacting with a portion of one of said members and. having its axis interseetingthe axis of said members, and means secured to the other of said members and coacting with said pin for varying the angularity of the axis of said pin relative to the axis of said crushing members whereby crushing is effected.

2. A crusher comprising a pair of crushing members rotatable in the same direction to feed material along the. crushing surfaces thereof, external and" internal shafts by which said members are carried, a movable pin, and means for transmitting the reactive thrust induced by crushing from said pin to said external shaft, said pin being interposed between said means and said internal shaft for causing the crushing members to relatively approach each other.

3. A. crusher comprising a pair of crushing members rotatable to feed material along the crushing surfaces thereof, means for taking up between the members the reactive thrust induced by crushing, and rotatable direct acting mechanical means for ausing all portions of said members to simultaneously approach each other.

at. A crusher comprising a pair of crushing members rotatable to feed material along the crushing surfaces thereof, means for taking up between the members the reactive thrust induced by crushing, and retatable direct acting mechanical means for causing one of said members to move along its axis.

A crusher comprising a pair of crushing members rotatable in the same direc tion about an axis to feed material along the crushing surfaces thereof, at least one pin, a bearing for one end of said pin on one of said members, and a bearing eccentric to said axis for the other end of said pin, whereby during rotation of the crushing members the angularity of the pin relative to the crusher axis is varied and relative movement of said members is produced.

6. A crusher comprising a pair of crushing members rotatable in the same direc tion about an axis to feed material along the crushing surfaces thereof, a pin having one end bearing directly against a portion of at least one of said members, and means coacting with said pin for varying the angularity thereof relative to the crusher axis whereby relative movement of said members is produced.

7. A crusher comprising a pair of coaxial crushing members rotatable to feed material along the crushing surfaces thereof, means for taking up between the members the reactive thrust induced by crushing, means fol-causing said members to approach each other to crush material, and common means for rotating said members to feed and for actuating said means for causing all portions of said members to simultaneously approach each other.

In testimony whereof, the signature of the inventor is aflixed hereto in the presence of two witnesses.

CHARLES S. LINCOLN.

Witnesses:

CHAs. L. BYRON, W. H. LIEBER.

copies of this patent may be'obtai-ned for five cents each, by addressing" the Commissioner of Patents, Washington, D. 0. 

